SOHC.co.uk Forums > CB750

swingarm stuff

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Crispy:

--- Quote from: philward on February 22, 2018, 10:15:43 PM ---Mic the original spindle - o check if its not rusted, corroded and hence oversize - might have been damaged due to missing spacer. Conversely, check the bushes in the replacement swingarm in case they've been damaged - sounds obvious but got to be one or the other.

--- End quote ---

Cheers...will do that tomorrow..I don't suppose it would take much of a blemish to cause a problem.

Bryanj:
What you are calling a pivot is only a bolt, the collar is trapped in the frame by tightening the bolt and so does not turn--the bushes turn on it, i dont think the diameter or length of the collar varies accross all the 750 but the grease holes and spirals(or lack of) do

Crispy:
Well I measured the internal diameter of the collar 13.92mm and the external diameter of the Pivot Bolt 13.93 ..(an average of 4 measurements each) so I guess it's pretty close...there must be a bit of corrosion or other distortion somewhere...I'll  just get a new collar when I get round to reassembly and see if it fits then.
Pleased to have got the old bushes out without any hassle after following the tips picked up on this forum... thought that would be harder than it was ..thanks!  :)

kettle738:

Could your pivot bolt have had a fresh coat of bright zinc plating and 'grown' enough to prevent it getting inside the collar?

Every time I have spindles or the like zinc plated it's usually necessary to remove it from close fit areas.

Just a thought............Mick.

Crispy:
Hi,
Yes that is a distinct possibility..it does look quite 'shiny'! That would also explain why the original collar was left out!  Bit drastic tho...it's getting me a bit worried about what else that owner did..especially regarding the motor!  :-\

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